JPH0410309B2 - - Google Patents
Info
- Publication number
- JPH0410309B2 JPH0410309B2 JP59027586A JP2758684A JPH0410309B2 JP H0410309 B2 JPH0410309 B2 JP H0410309B2 JP 59027586 A JP59027586 A JP 59027586A JP 2758684 A JP2758684 A JP 2758684A JP H0410309 B2 JPH0410309 B2 JP H0410309B2
- Authority
- JP
- Japan
- Prior art keywords
- governor switch
- rotor
- reactor
- contacts
- switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000004140 cleaning Methods 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 description 9
- 239000002184 metal Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/60—Auxiliary means structurally associated with the switch for cleaning or lubricating contact-making surfaces
- H01H1/605—Cleaning of contact-making surfaces by relatively high voltage pulses
Landscapes
- Switches Operated By Changes In Physical Conditions (AREA)
- Control Of Direct Current Motors (AREA)
- Dc Machiner (AREA)
- Contacts (AREA)
Description
【発明の詳細な説明】
(イ) 産業上の利用分野
本発明は火花消弧素子を並列接続したガバナー
スイツチの接点を清浄する装置に関する。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a device for cleaning the contacts of a governor switch in which spark extinguishing elements are connected in parallel.
(ロ) 従来技術
小型モータのロータに取付けられる調速機構
は、ロータの回転遠心力で開成するガバナースイ
ツチを有し、その開成時にロータコイルの蓄積エ
ネルギーがガバナースイツチの接点間に過渡的に
放出されて火花（スパーク）を生じ、電気ノイズ
となる。このノイズを低減するため、ガバナース
イツチと並列に、バリスタ、コンデンサ、あるい
は抵抗等の火花消弧素子が設けられる。一方ガバ
ナースイツチの接点表面の清浄、特に酸化被膜の
払拭のために、実公昭53−8887号公報に開示され
るように前記火花が利用される。ところが上記公
報で先に提案したものは、ガバナースイツチの両
端間に火花消弧素子と遅延スイツチの直列回路を
設け、この遅延スイツチが小型モータの給電スイ
ツチの閉成より遅れて閉成する迄の間に、ガバナ
ースイツチの接点間に、ロータコイルの蓄積エネ
ルギーを利用して火花を生ぜしめ、接点表面を清
浄させるものである。このため接点の清浄のため
に特別に遅延スイツチを設けねばならず、小型モ
ータにとつてコスト高になる。(b) Prior art The speed-governing mechanism attached to the rotor of a small motor has a governor switch that is opened by the rotational centrifugal force of the rotor, and when the governor switch is opened, the energy stored in the rotor coil is transiently released between the contacts of the governor switch. This causes sparks to be generated, resulting in electrical noise. In order to reduce this noise, a spark extinguishing element such as a varistor, capacitor, or resistor is provided in parallel with the governor switch. On the other hand, the sparks are used to clean the contact surfaces of the governor switch, particularly to wipe away oxide films, as disclosed in Japanese Utility Model Publication No. 8887/1987. However, what was proposed earlier in the above publication is to install a series circuit of a spark extinguishing element and a delay switch between both ends of the governor switch, and to make the delay switch close later than the closing of the power supply switch of the small motor. In between, a spark is generated between the contacts of the governor switch using the energy stored in the rotor coil to clean the contact surfaces. Therefore, a special delay switch must be provided to clean the contacts, which increases the cost for small motors.
そこで火花消弧素子を取付ける前の調速機構を
ロータに取付け、このロータを一旦小型モータと
して組込み、ガバナースイツチの開成時に生ずる
火花によりガバナースイツチ接点を清浄し、その
後ロータを小型モータから取り外し、調速機構に
火花消弧素子を取付けるようにしていた。従つて
小型モータの製造において、これらの作業が極め
て頻瑣であり、量産過程のネツクになつていた。 Therefore, the speed regulating mechanism before installing the spark extinguishing element is attached to the rotor, this rotor is temporarily assembled as a small motor, the contacts of the governor switch are cleaned by the sparks generated when the governor switch is opened, and then the rotor is removed from the small motor and adjusted. A spark extinguishing element was attached to the speed mechanism. Therefore, in the manufacture of small motors, these operations are extremely frequent and become a bottleneck in the mass production process.
(ハ) 発明の目的
本発明はかかる点に鑑み発明されたものにし
て、火花消弧素子を並列接続したままでガバナー
スイツチの接点を清浄することができる装置を提
供することを目的とする。(c) Purpose of the Invention The present invention was invented in view of the above points, and an object of the present invention is to provide a device that can clean the contacts of a governor switch while the spark extinguishing elements are connected in parallel.
(ニ) 発明の構成
かかる目的を達成するため、本発明による装置
は、火花消弧素子を並列接続したガバナースイツ
チを有する調速機構付き小型モータのロータを回
転可能に支持する台と、この台に支持された前記
ロータを外力で回転させる回転手段と、前記台を
通じて前記ガバナースイツチの開閉接点間に直流
電源からリアクタを介して給電する給電手段とを
備え、前記リアクタは、前記ガバナースイツチの
接点開成時における前記リアクタの両端電圧が前
記火花消弧素子の消弧能力以上の電圧を生ずるも
のであり、このリアクタの両端電圧がガバナース
イツチの開閉接点間に印加されることを特徴とす
るものである。(d) Structure of the Invention In order to achieve the above object, the device according to the present invention includes a stand that rotatably supports the rotor of a small motor with a speed regulating mechanism having a governor switch in which spark extinguishing elements are connected in parallel, and this stand. A rotating means for rotating the rotor supported by an external force by an external force, and a power feeding means for feeding power from a DC power source through a reactor between the opening and closing contacts of the governor switch through the stand, and the reactor is connected to the contacts of the governor switch. The voltage across the reactor at the time of opening generates a voltage higher than the arc extinguishing capability of the spark extinguishing element, and the voltage across the reactor is applied between the opening and closing contacts of the governor switch. be.
(ホ) 実施例
以下本発明の一実施例を図面に基いて説明す
る。第１図は本発明によるガバナースイツチの接
点清浄装置の原理説明図である。この図面におい
て、１は回転台にして、支持脚２，２で支持され
た固定台３にボールベアリング４を介して回転自
在に保持されている。この回転台１は下面中央に
突出軸５を有し、この軸の下端は駆動モータ６の
回転軸７に結合され、このモータの回転により回
転台１が回転駆動される。回転台１の上面には、
調速機構８を取付けた小型モータのロータ９が載
置される。即ち、ロータ９の軸１０を、回転台１
の中心に位置させる凹孔１１を有し、またロータ
９が回転台１に対し、相対的に回動するのを阻止
すべく、ロータコア１２のスロツトに係合する係
合ピン１３を備えており、必要あれば、この係合
ピンの先端に掛止部を設けて、ロータ９が図中上
方に移動しないようにしてもよい。このようにし
て、ロータの回転手段Ａが構成されている。(E) Embodiment An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram illustrating the principle of a governor switch contact cleaning device according to the present invention. In this drawing, reference numeral 1 denotes a rotary table, which is rotatably held on a fixed table 3 supported by support legs 2, 2 via a ball bearing 4. This rotary table 1 has a protruding shaft 5 at the center of its lower surface, and the lower end of this shaft is connected to a rotating shaft 7 of a drive motor 6, and the rotary table 1 is rotationally driven by the rotation of this motor. On the top of the turntable 1,
A rotor 9 of a small motor equipped with a speed regulating mechanism 8 is mounted. That is, the shaft 10 of the rotor 9 is
It has a recessed hole 11 located at the center of the rotor 9, and an engaging pin 13 that engages with a slot in the rotor core 12 to prevent the rotor 9 from rotating relative to the rotary table 1. If necessary, a hook may be provided at the tip of this engagement pin to prevent the rotor 9 from moving upward in the figure. In this way, the rotor rotating means A is configured.
ロータ９は、第２図に示すように、３個のロー
タコイル１４，１５，１６を有し、Ｙ結線されて
おり、その各一端は整流子１７の各セグメント１
８，１９，２０に接続され、２個のロータコイル
１５，１６の各他端と中性点２１との間に、夫々
ガバナースイツチ２２と火花消弧素子２３の並列
回路が設けられている。実施例では火花消弧素子
としてバリスタが用いられている。 As shown in FIG.
A parallel circuit including a governor switch 22 and a spark extinguishing element 23 is provided between the other ends of the two rotor coils 15 and 16 and the neutral point 21, respectively. In the embodiment, a varistor is used as the spark extinguishing element.
各ガバナースイツチ２２と火花消弧素子２３は
調速機構８に設けられており、その調速機構の正
面図を第３図に示す。この図面から明らかな如
く、調速機構８は第１金属片２４と第２金属片２
５とを有する略十字状の金具を有し、その中央交
叉部に樹脂モールド体２６を固着する。その後、
第２金属片２５の両翼片部２７，２７を第１金属
片２４から切り離すため、アンダーカツト部２
８，２８を設け、第１金属片２４の両端に設けた
各隆起部（調速機構の底面図である第４図参照）
２９に固定接点３０を有する調整ネジ３１を螺合
すると共に各翼片部２７の先端折曲部３２にＵ字
型バネ片３３の基端をネジ３４により取付け、こ
のバネ片に可動接点３５とガバナーウエイト３６
を取付けてガバナースイツチ２２を形成する。ま
た各翼片部２７に設けた側延片３７と第１金属片
２４との間に、夫々火花消弧素子２３を取付けて
いる。尚第１図では１個のガバナースイツチ２２
がブロツク状に示されている。 Each governor switch 22 and spark extinguishing element 23 are provided in a speed regulating mechanism 8, and a front view of the speed regulating mechanism is shown in FIG. As is clear from this drawing, the speed regulating mechanism 8 includes a first metal piece 24 and a second metal piece 2.
5, and a resin molded body 26 is fixed to the central intersection thereof. after that,
In order to separate the wing portions 27, 27 of the second metal piece 25 from the first metal piece 24, the undercut portion 2
8 and 28, and each raised portion provided at both ends of the first metal piece 24 (see FIG. 4, which is a bottom view of the speed regulating mechanism).
An adjustment screw 31 having a fixed contact 30 is screwed into the spring piece 29, and the base end of a U-shaped spring piece 33 is attached to the tip bent part 32 of each wing part 27 with a screw 34, and a movable contact 35 is attached to this spring piece. governor weight 36
is attached to form the governor switch 22. Furthermore, a spark extinguishing element 23 is attached between the side extension piece 37 provided on each wing piece portion 27 and the first metal piece 24, respectively. In addition, one governor switch 22 is shown in FIG.
is shown in block form.
第１図に戻つて、回転台１の上面には、ガバナ
ースイツチ２２を構成する第１金属片２４と翼片
部２７とに夫々接触する接続ピン３８，３９が設
けられ、これらの接続ピンは突出軸５に設けたス
リツプリング４０，４１に接続されている。この
スリツプリングには刷子４２，４３が摺接してお
り、この一対の刷子は直流電源４４、リアクタ４
５及び抵抗４６の直列回路の両端に接続されて、
閉回路手段Ｂを構成する。 Returning to FIG. 1, connection pins 38 and 39 are provided on the top surface of the rotary table 1, and are in contact with the first metal piece 24 and the wing part 27, respectively, which constitute the governor switch 22. It is connected to slip rings 40 and 41 provided on the protruding shaft 5. Brushes 42 and 43 are in sliding contact with this slip ring, and this pair of brushes is connected to a DC power source 44 and a reactor 4.
5 and a resistor 46,
This constitutes a closed circuit means B.
第５図は駆動モータ６の制御回路図である。こ
の図面から明らかなように、駆動モータ６はガバ
ナースイツチ２２が閉成しているとき、直流電源
４４にて制御トランジスタ４７にベース電流が流
れて、このトランジスタが導通し、給電トランジ
スタ４８も導通して、駆動モータ６が端子４９，
５０からの給電により回転する。これにより回転
台１が回転し、その回転速度がガバナースイツチ
２２の開成速度に達すると、このガバナースイツ
チ２２の開成により、制御トランジスタ４７には
ベース電流が流れなくなり、両トランジスタ４
７，４８が遮断する。このため駆動モータ６の回
転力がなくなり、回転台１の回転速度が低下して
ガバナースイツチ２２が閉成し、再び駆動モータ
６の回転によりガバナースイツチ２２が開成す
る。かくしてガバナースイツチ２２が開閉を繰り
返すことになる。 FIG. 5 is a control circuit diagram of the drive motor 6. As is clear from this drawing, when the governor switch 22 is closed, the base current of the drive motor 6 flows through the control transistor 47 from the DC power supply 44, which makes this transistor conductive, and the power supply transistor 48 also becomes conductive. Then, the drive motor 6 is connected to the terminal 49,
It rotates by power supply from 50. As a result, the turntable 1 rotates, and when its rotational speed reaches the opening speed of the governor switch 22, the base current no longer flows through the control transistor 47 due to the opening of the governor switch 22, and both transistors 4
7,48 cut off. Therefore, the rotational force of the drive motor 6 is lost, the rotational speed of the rotary table 1 is reduced, the governor switch 22 is closed, and the governor switch 22 is opened by the rotation of the drive motor 6 again. In this way, the governor switch 22 is repeatedly opened and closed.
而してガバナースイツチ２２の開成時には、リ
アクタ４５の蓄積エネルギーが過渡的にガバナー
スイツチ２２の接点３０，３５間に放出されて、
その接点間に火花を生じ、接点表面を清浄する。
この場合に、接点３０，３５間の開成時に火花消
弧素子２３の消弧能力以上の電圧が、その接点間
にかかりその素子２３で吸収しきれない電圧で火
花が生ずるものと考えられる。また火花発生の現
象面から見ると、接点間の開成直後であり、火花
消弧素子２３が火花消弧の機能を発揮する以前に
火花が生ずるものとも解される。接点開成時の火
花消弧素子の消弧能力とは、電圧の大きさ及び消
弧機能を発揮するまでの時間をいうものとする。 When the governor switch 22 is opened, the energy stored in the reactor 45 is transiently released between the contacts 30 and 35 of the governor switch 22.
A spark is produced between the contacts, cleaning the contact surfaces.
In this case, when the contacts 30 and 35 are opened, a voltage greater than the arc extinguishing capability of the spark extinguishing element 23 is applied between the contacts, and the voltage that cannot be absorbed by the element 23 causes sparks to be generated. Furthermore, from the perspective of the phenomenon of spark generation, it can be understood that sparks are generated immediately after the contacts are opened and before the spark extinguishing element 23 performs its spark extinguishing function. The arc-extinguishing ability of a spark extinguishing element when a contact is opened refers to the magnitude of the voltage and the time required to exhibit the arc-extinguishing function.
(ヘ) 発明の効果
本発明による装置は、火花消弧素子を並列接続
したガバナースイツチを有する調速機構付き小型
モータのロータを回転可能に支持する台と、この
台に支持された前記ロータを外力で回転させる回
転手段と、前記台を通じて前記ガバナースイツチ
の開閉接点間に直流電源からリアクタを介して給
電する給電手段とを備え、前記リアクタは、前記
ガバナースイツチの接点開成時における前記リア
クタの両端電圧が前記火花消弧素子の消弧能力以
上の電圧を生ずるものであり、このリアクタの両
端電圧がガバナースイツチの開閉接点間に印加さ
れることを特徴とするものであるから、このリア
クタの両端電圧がガバナースイツチの開閉接点間
に印加されるときに、ガバナースイツチの接点間
に生ずる火花により、火花消弧素子を並列接続し
たままでガバナースイツチの接点を清浄すること
ができ、清浄工程が従来のものに比し簡単にな
る。(f) Effects of the Invention The device according to the present invention includes a stand rotatably supporting the rotor of a small motor with a speed regulating mechanism having a governor switch in which spark extinguishing elements are connected in parallel, and the rotor supported by the stand. A rotating means for rotating by an external force, and a power feeding means for supplying power from a DC power supply through a reactor between the open/close contacts of the governor switch through the stand, and the reactor is configured to rotate at both ends of the reactor when the contacts of the governor switch are opened. The voltage generated is higher than the arc extinguishing capability of the spark extinguishing element, and the voltage across the reactor is applied between the opening/closing contacts of the governor switch. When voltage is applied between the opening and closing contacts of the governor switch, the sparks generated between the contacts of the governor switch can clean the contacts of the governor switch while the spark extinguishing elements are connected in parallel, making the cleaning process much easier than before. It's easier than that.
図面は本発明によるガバナースイツチの接点清
浄装置の一実施例を示し、第１図は同装置の原理
図、第２図はロータの電気回路図、第３図は調速
機構の正面図、第４図は調速機構の底面図、第５
図は上記装置の電気回路図である。
２３……火花消弧素子、２２……ガバナースイ
ツチ、９……ロータ、Ａ……回転手段、４４……
直流電源、４５……リアクタ、３０，３５……接
点、Ｂ……閉回路手段。
The drawings show an embodiment of the contact cleaning device for a governor switch according to the present invention. FIG. 1 is a principle diagram of the device, FIG. 2 is an electric circuit diagram of the rotor, and FIG. 3 is a front view of the speed governing mechanism. Figure 4 is a bottom view of the speed regulating mechanism, Figure 5
The figure is an electrical circuit diagram of the above device. 23... Spark extinguishing element, 22... Governor switch, 9... Rotor, A... Rotating means, 44...
DC power supply, 45...reactor, 30, 35...contact, B...closed circuit means.
Claims (1)
チを有する調速機構付き小型モータのロータを回
転可能に支持する台と、この台に支持された前記
ロータを回転させる駆動モータと、前記ガバナー
スイツチの開閉に応じて前記駆動モータをオン・
オフ制御する制御手段と、前記支持する台の給電
経路を通じて、前記ガバナースイツチの開閉接点
間に外部の直流電源からリアクタを介して給電す
る給電手段とを備え、前記リアクタは、前記ガバ
ナースイツチの接点開成時における前記リアクタ
の両端電圧が前記火花消弧素子の消弧能力以上の
電圧を生ずるものであり、このリアクタの両端電
圧がガバナースイツチの開閉接点間に引火される
ことを特徴としたガバナースイツチの接点清浄装
置。1. A stand that rotatably supports the rotor of a small motor with a speed-governing mechanism that has a governor switch in which spark extinguishing elements are connected in parallel, a drive motor that rotates the rotor supported by this stand, and a drive motor that rotates the rotor, and that opens and closes the governor switch. The drive motor is turned on and off in response to
and a power supply means for supplying power from an external DC power supply through a reactor between the open/close contacts of the governor switch through the power supply path of the supporting stand, and the reactor is configured to supply power to the contacts of the governor switch. A governor switch characterized in that the voltage across the reactor at the time of opening generates a voltage higher than the arc extinguishing capability of the spark extinguishing element, and the voltage across the reactor is ignited between opening and closing contacts of the governor switch. contact cleaning device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59027586A JPS60174052A (en) | 1984-02-15 | 1984-02-15 | Contact cleaning device of governor switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59027586A JPS60174052A (en) | 1984-02-15 | 1984-02-15 | Contact cleaning device of governor switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60174052A JPS60174052A (en) | 1985-09-07 |
| JPH0410309B2 true JPH0410309B2 (en) | 1992-02-24 |
Family
ID=12225054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59027586A Granted JPS60174052A (en) | 1984-02-15 | 1984-02-15 | Contact cleaning device of governor switch |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60174052A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19715687A1 (en) * | 1997-04-15 | 1998-10-22 | Agie Ag Ind Elektronik | Spark erosion machine with at least one wire electrode and method for machining a workpiece in a spark erosion machine |
| CN107863956B (en) * | 2016-11-12 | 2021-04-13 | 广州市金矢电子有限公司 | Dynamic electrode arc-extinguishing device |
| DE102020214239A1 (en) | 2020-11-12 | 2022-05-12 | Robert Bosch Gesellschaft mit beschränkter Haftung | Method of operating a contactor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5223042A (en) * | 1975-08-13 | 1977-02-21 | Allied Chem | Process for manufacture of 22alkoxyy33oxyiminocycloalkene |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58113917U (en) * | 1982-01-28 | 1983-08-04 | 日本電気株式会社 | switch |
-
1984
- 1984-02-15 JP JP59027586A patent/JPS60174052A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5223042A (en) * | 1975-08-13 | 1977-02-21 | Allied Chem | Process for manufacture of 22alkoxyy33oxyiminocycloalkene |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60174052A (en) | 1985-09-07 |
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